Compass caih



Feb. 25, 1947 M. KIYDJEL COMPASS CARD REFINISHING STAND Filed Oct. 12, 1945 3 Sheets-Sheet l 20 yea HTTOENEYS Feb. 25, 1947. M.KIDJEL 2,416,323

: COMPASS. CARD REFINISHING STAND Q Filed Oct. 12,- 1945 s Sheets-Sheet 5 197' 7' OENE Y5 PatentedFeb. 25, 1947 I 2,416,323 coMrAss CARD REFINISHING STAND Maurice Kidjel Honolulu, Territory of Hawaii Application October 112., 1945, Serial No. 622,104

(Granted under the I act of March 3,, 1883, as

8 Claims.

. fine, exact and uniform figures and degree marks on the cards.

Another object is to provide means for restor in-g bent or otherwise distorted cards to their original shape. 7

Other objects and advantages will be evident from a consideration of the following description taken in conjunction with the drawings, wherein: 1 Fig. 1 is a top plan view of the assembled device. I

Fig.2 1S3, verticalsection taken at22 of Fig. 1, showing the stencil in place'but with the work removed for clearness.

Fig. 2a is a bottom plan view of the stencil amended April 30, 192.8; 370 0. G. 757) holder head and the stencil retainer as these two parts appear when assembled together but removed from the remainder of the stencil holder assembly.

Fig. 2b is a vertical axial section through the stencil holder head taken on the line 2b2b of Fig. 2a. but with the stencil retainer removed.

Fig. 3 is a view of the fully assembled device taken at 33 of Fig. l. v

' Fig. 4 is a top plan view of a compass card assembly showing the outside of the frusto-c'onical card and the top of the float.- J

Fig. 4a is a bottom plan view of the compass cardassembly showing the insideof the frustoconical card, the bottom of the float and the magnets.

Fig. 4b is an axial section 4a.

Fig. 5 is a view of thearcuate thin sheet metal stencil, the openings of which'are accurately machined on. an engraving machine, the arcuate shape being adapted to take irusto-conical' form when the ends are brought together. Like reference characters refer to like throughout the several views."

' Referring more particularly to Flg. lof the taken at lb-4110f Fig.

parts drawings, a base i0 is provided at oneend with base at the lower end as at M and having the upper end reduced to a smaller diameter as at I6. A cavity I] in the end of the base is for a purpose. which will hereinafter appear. .At the other end, a stem I8 is threaded into the base l0 as at. 20, the upper portion of the stem being reduced in diameter as at 22. A concentric opening extends through the portion 22 and part way through the larger portion of the stem .IC for the purpose of .slidably. receiving an ejector 24. A transverse openingisprovided in thestem I8 for the ejector operating plunger 26 which is yieldably held in the position shown by. aspring 28. A washer 30 secured .to the left hand end of the plunger 26 by a screw 32 limits the amount that the spring .28 may move the plunger 26 to the right. A portion of. the plunger 26 at 3! is so tapered thatmovement. of the plunger 25 against the resistance of the spring 28 raises the ejector 24. The purpose of .the ejector isto. remove the work if, for any reason, it sticks in the fixture.

A compasscard adapter assembly 35 consists, of an adapter body 36 which, at its'lower end, has a hubv 38. having an opening that is slidablefreely over the. tubular portion 22 of the. stem l8 but may be fastened in place on said tubular portion by the thumbscrew .40 (see Fig.3). The upper cup-shaped portion of the adapter body is externally beveled as at 42 to fit the interior of the frusto-conical compass card 44 of the com. pass card assembly 45 (see Fig. 4b). Fastened in the cupped upper side of v the adapter body 36 by screws 46 is a relatively thin-walled collar 48, the interior of which is adapted to. receive the float portion 50 of the compass card assembly 45. Transverse notches .52 are formed in the collar 48 to receive the magnets 54 whichyare carried on the bottom of the float 50. (see Fig. 4d).

on the stencil holder for aligning the compass.

card assembly with the stencil. A shield rests upon a shoulder on the adapter body 36 to keep the paint spray oil the working parts I8, 26, 28, etc. t v

' With the adapter and its associated parts, above enumerated, assembled as shown, the com-'- pass card assembly-45-may be positioned in the] compass card with the stencil.

" number of the devices .to be made.

and the beveled inside of the frusto-conical compass card 44 fitting over the beveled upper side 42 of the adapter body 36. The upper edge of the collar 48 which is not cut away by the notches 55 and 56 will reach upward through the arcuate openings 5l-between the -compass card 44 and the float 50," being thereby positioned to cooperate with the stencil holder to align the Thus assembled the compass card assembly 45. is readygto have, the stencil appliedthereto.

The stencil holder assembly, -62;consists cf a head 64 the under side of which is first bored at 66 to the same taper as the-compass card 44 but to a greater depth and to a diameter which will allow the lower edge of the head 64 to come about flush with the lower edge of-the v compass card the stem I 2. The bushing 84 may preferably be press-fitted into the arm 86.

The arm 86 is split at 88 and provided with a thumbscrew 90 and a bolt 92 whereby the arm may be fixed in any position to which it may be swung. A spring 94 placed between the top of the nut 80 and the bottom of the bushing 84 urges "theistencil assembly downward to provide proper pressure between the stencil and the work. A washer 96 is held to the end of the spindle "by a screw 98 to limit downward travel of the stencil "assembly 62. The operation of the device is substantially as follows: It may be assumed that the stencil 68, Fig. 5, has been "placed in the reces of the stencil head 64 with the joint of the stencil centrally locatedunder one of the bridges H which brings all of the bridges exactly midway between two of 44 when the parts are assembled as in Fig. 2.

To provide space in the head 64 for the stencil 68" (see' Fig. 5) the tapered bore 66is further provided with a shallow recess 10 which extends froma point near the top of the :bore, 66 to a point near its lower edge (see Fig. 2b).

' When so'made, the recesslfl will receivethe stencil 68, Fig. 5, when the ends are brought t0: gether to produce a stencil of frusto-conical form. In order to expose the outer surface of the stencil 68 when it is in place in the holder 64, four windows 61 are cut through the side walls of the holder, see Figs. 2a and 2b, leaving only a. ring 69 supported on the body of the holder by the narrow bridges H. The hub 12 on the upper side of the stencil head 64 has an opening for the 'and'an inspection of Fig. 5 will show that the center line of thearcuate sheet metal stencil 68,

which will assume a frusto-conical form when in-i sorted in the recess 18 of the stencil head 64, is also turned l2 /2 anticlockwise .ofi' the N line. It followsthat when the stencil head assembly 62,

with the stencil 68 in place, is brought down over the compass card adapter assembly-35, with the compass card assembly 45 in place, the joint in b the stencil 68 will be under one of the bridges 1 I,

'andthe N position in the stencil will be 12 /z off the center of another of the bridges H, whereby neither the N position nor any other of the open ings-in'the stencil are inaccessible for spraying. Italso follows that the magnets 54 will be parallel to the center line passin'g'throughN and S. A

nut 86011 another threaded part8? of the spindle 14 draws the stencil retainer 18 into the smaller tapered opening thereby holding the stencil 68 in its recess 76. L 5 v .In order to facilitate description, the stencil holder-64 has been described by the process of making it out of a piece of solid steel. It will be obvious, however, that this and other pieces of the device may be die cast orotherwisefabricated,

the procedure selected being governed by the The, upper end of the spindle 14 is. slidableina bushing 64- which is supported in the arm 86 which is in, wrasw nse le QN PlPW JQPQeQ and. ie

the degree marks (see Fig. 3) and twelve and one-half degrees anticlockwise (viewed from the .top) from the N, E, S and W positions and that the stencil head 64 has also been turned -in rela;- ,tion to the stencil retainer 18 until the center line through the bridges H i also twelve and one-half degrees off the center line of the lugs 19. and 8| but is coincident with the other center line which'passes through the N, E, S andiw sitions of the stencil. s Y. In order to insert a compass card assembly the thumbscrew 90 should be loosened, thearm 86 raised and swung to one side, and a compass card assembly 45, Figs. 4, 4a and 4b placed with thefrusto-conical card 44 on the outside and the floaton the inside of the adapter. assembly 35 and with I The arm 86 may now be returned to position and lowered so that the stencil head assembly 62 fits down over the adapter assembly 35 with the compass card assembly 45 between, and with the lugs 19 and 8! of the stencil retainer 18 entered into the notches 55 and 56 of the thin-walled collar 48. After the stencil assembly 62 engages-the compass card assembly 45, the armmay be brought down somewhat farther to slightly compress the spring 94 and thereby raise the Washer 96 from contact with the top of the bushing 84 whereby the work may always be held under a uniform pressure and any distorted cards. bereturned to their original shape. v v. i 'The card may now be sprayed through the win; .dows 61.. and when suificiently dry may be removed from the fixture by again loosening the thumbscrew 90, raising the stencil holder assembly'off the work and swinging the arm 86 to one side. The ejector plunger 26 may then be pushed inward toraise the compass card assembly 45 off the adapter assembly 35. When'retouchi-ng or any other handwork is to be doneg the thumb screw 40 maybe loosened and the adapter35 with the compass card assembly45 thereon laid in the cavity l'l asseerr in Fig. 2, whereby handwork may be conveniently performed.

base,;an adapter assembly concentricallygsup- ,pQ ted,- on said stem, said adapter. assembly being domed; ontthe. outside to, fit, lntossaid. compass the magnets 54 lying in the grooves card and on the inside to receive said float, and having locating grooves for the magnets and a locating portion with circumferentially spaced notches extending upwardly from said adapter through said open space, said notches corresponding to the N-S and E-W positions on the card, a spindle coaxially positioned above said stem, a stencil holder assembly concentrically positioned on said spindle, said stencil holder assembly com-- prising a stencil head having its interior shaped to hold a frusto-conical stencil which is adapted to fit over said compass card, said stencil head having a series of Windows for access to the outer surface of said stencil, with bridges between the windows of less thickness than the space between any two of the degree marks on the stencil, and a stencil retainer in said stencil head adapted to clamp said stencil by its upper edge, said retainer having circumferentially spaced lugs for engagement with said circumferentially spaced notches, said lugs being rotatably offset a whole number of degree marks plus half of a degree mark with respect to said bridges and in alignment with the N -S and E-W .axes of said stencil.

2. The device of claim 1 wherein the stencil consists of an arcuate strip of thin sheet metal adapted to have its ends brought together to form the frustum of a cone, and with the degree marks and the N-S and E-W positions cut therethrough, the joint where the ends of the strip come together being offset from the S position a whole number of degree marks plus half of a degree mark.

3. For renewing the degree marks and the N-S and E-W positions on frusto-conical compass cards of the type having a float concentrically supported within the card with open space between and a bar magnet carried by the float, a fixture which comprises a base, a stem extending upwardly from said base, an adapter concentrically supported on said stem, said adapter being formed on the outside to fit into said compass card and on the inside to receive said float, and having a locating groove for the magnet and a locating portion extending upwardly from said adapter through said open space, a spindle coaxially positioned above said stem, a stencil holder concentrically positioned on said spindle, said stencil holder comprising a stencil head having its interior shaped to hold a frusto-conical stencil which is adapted to fit over said compass card, said stencil head having a series of windows for access to the outer surface of said stencil with bridges between the windows of less thickness than the space between two of the degree marks on the stencil, and a stencil retainer in said stencil head adapted to clamp said stencil by its upper edge, said retainer having locating means for engagement with said locating portion, said cating means being rotatably ofiset a whole number of degree marks plus half of a degree mark with respect to said bridges but not offset with respect to the said N-S and E-W positions on the said stencil.

4. The device of claim 3 wherein the stencil consists of an arcuate strip of thin sheet material adapted to have the ends brought togetherto form the frustum of a cone, and with the degree marks and the N-S and the E- W positions out therethrough, the joint where the ends of the strip come together being offset from one of the N, S, E or W positions a whole number of degree marks plus half of a degree mark.

5. For stenciling the degree marks and the N-S and E-W positions on frusto-conical compass cards of the type having a bar magnet suspended therefrom for rotation therewith, a fixture which comprises a base, an adapter assembly supported on said base, said adapter assembly being formed to a frusto-conical shape to fit into said said compass card and having a locating pocket for receiving the magnet, and a stencil locating portion extending upwardly from said adapter above said compass card, a stencil holder concentrically p0- sitioned with respect to said adaptensaid stencil holder comprising a stencil head having its interior shaped to hold a frusto-conical stencil which is adapted to fit over said compass card, said stencil head having a series of windows for access to the outer surface of said stencil with bridges between the windows of less thickness than the space between two of the degree marks on the stencil, and a stencil retainer in said stencil head adapted to clamp said stencil in said stencil head, said retainer having locating means for engagement with said locating portions, said locating means being rotatably offset a whole number of degree marks plus half of a degree mark with respect to said bridges but in register with the N-S and E-W positions on the stencil.

6. The device of claim 5 wherein the stencil is composed of an arcuate strip wherein a center line bisecting the strip passes midway between two degree marks, whereby the joint formed where the ends come together is positioned under one of the bridges.

7. For stenciling the degree marks and the N-S and E-W positions on compass cards of the type having a bar magnet attached thereto, a fixture which includes an adapter formed to receive and support said compass card, said adapter having a locating pocket for the magnet and a stencil locating portion extending therefrom, a stencil holder having its interior shaped to hold a stencil which is adapted to fit over said compass card, said stencil holder having a series of windows for access to the outer surface of said stencil with bridges between the windows of less thickness than the space between two of the degree marks on the stencil, and a stencil retainer in said stencil holder adapted to clamp said stencil in said holder, said retainer having locating means for engagement with said locating portion, said 10- eating means being rotatably offset a whole number of degree marks plus half of a degree mark with respect to said bridges and in register with one of the N, S, E or W positions on said stencil.

8. A fixture for stenciling the degree marks and the N, S, E and W positions on compass cards of the type having a magnet carried by the card, said fixture comprising an adapter having means to support a card and having magnet 10- eating pockets and stencil locating means formed MAURICE KIDJEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,658,765 Fordyce Feb. 7, 1928 

